FORMATION OF METALLIC SHAPE BY FORGING

摘要

PURPOSE: To execute the intermediate formation of a large scaled H shaped material to a prescribed web thickness and web height with several passes by forging with an upper and a lower dies and a right and a left dies from the vertical and the horizontal directions. CONSTITUTION: A driven shaft 107 for right and left dies is rotated by driving a motor 51. The right and left dies 45 as the same way as the upper and the lower dies 41 are moved so as to draw the closed curve. A blank 1 having rectangular cross section is supplied into a caliber formed with the moved upper and lower dies 41 and the right and left dies 45 through a roller table 145. The blank 1 is repeatedly reduced while feeding with the upper and the lower dies 41 and the right and the left dies 45 to form the H shape. By this method, the rough formation of the large scaled metallic shape having large flange width or the rough formation of the metallic shape having large control range of the flange width is executed in size-free.